Finding the Fourth Proportional to 108,623.72, 149,906.90 and 60,880.15

Step by Step Solution

1. Step 1: Write the proportion equation
   108,623.72 : 149,906.90 = 60,880.15 : x
2. Step 2: Convert to fraction form
   108,623.72/149,906.90 = 60,880.15/x
3. Step 3: Cross multiply
   108,623.72x = 149,906.90 × 60,880.15
4. Step 4: Simplify right side
   108,623.72x = 9,126,354,897.62
5. Step 5: Solve for x
   x = 9,126,354,897.62/108,623.72
6. Step 6: Final answer
   x = 84,018.06